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Vitamin B1 (Thiamine), Plasma

Order Code CH432
Turnaround Time 72 hours
Specimen Requirements
Specimen Source
Transport Container
(Specimen Container)

EDTA (lavender-top) tube

Preferred Specimens
Light protected
Minimum Volume (uL)
Collection Instructions
(Transport Temperature)
Transport Frozen
Specimen Stability
Temperature Period
Room temperature 8 hours
Refrigerated 48 hours
Frozen 30 days
Reject Criteria

Received room temperature
Received refrigerated
Received not protected from light

Special Instructions

Plasma: Collect blood in a lavender-top tube. Remove plasma within 4 hours of collection and transfer to a light protected pour off tube. If separation of cells can’t be performed immediately after collection, keep the whole blood refrigerated and protected from light. The separation of cells must be completed within 4 hours of collection. Separate cells by centrifugation at 2-8° C for 8-10 minutes. Transfer plasma to amber tube to protect from light and freeze tube immediately. Alternately, neutral colored tubes can be used if wrapped in aluminum foil. Ship frozen tubes at -10 to -30° C.

Test Details
Chromatography/Mass Spectrometry
Reference Ranges

Adult 8-30 nmol/L